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Time-of-flight MR angiography at 3T versus digital subtraction angiography in the imaging follow-up of 51 intracranial aneurysms treated with coils.

Abstract : OBJECTIVE: To compare 3D time-of-flight MR angiography (TOF-MRA) at 3 Tesla (3T) with digital subtraction angiography (DSA) for the evaluation of intracranial aneurysm occlusion after endovascular coiling. METHODS: In a prospective study, 51 consecutive patients (25 females, 26 males; median age, 51 years) with 51 saccular aneurysms treated with endovascular coiling underwent simultaneous DSA and 3T TOF-MRA at follow-up. DSA and TOF-MRA images were analyzed independently by two senior neuroradiologists. Findings were assigned to 1 of 3 categories in the Raymond classification: complete obliteration, residual neck or residual aneurysm. Agreement between observers and techniques was evaluated using kappa statistics. RESULTS: DSA images were not interpretable for one patient. Interobserver agreement was determined as excellent for DSA (kappa=0.86) and TOF-MRA (kappa=0.80). After reaching a consensus, DSA follow-up showed 26 (51%) complete obliterations, 20 (39%) residual necks and 4 (8%) residual aneurysms. TOF-MRA showed 23 (45%) complete obliterations, 22 (43%) residual necks and 6 (12%) residual aneurysms. Comparison between TOF-MRA and DSA showed excellent agreement between the techniques (kappa=0.86). In the four cases that were misclassified, TOF-MRA findings were assigned to a higher class than for DSA. CONCLUSION: TOF-MRA at 3T is at least as efficient as DSA for the evaluation of intracranial aneurysm occlusion after endovascular treatment with detachable coils. We suggest that TOF-MRA at 3T might be used as the primary method for imaging follow-up of coiled intracranial aneurysms.
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https://www.hal.inserm.fr/inserm-00845970
Contributor : Jean-Yves Gauvrit <>
Submitted on : Thursday, July 18, 2013 - 12:13:25 PM
Last modification on : Friday, January 17, 2020 - 8:20:03 PM

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Jean-Christophe Ferré, Béatrice Carsin-Nicol, Xavier Morandi, Michel Carsin, Axel de Kersaint-Gilly, et al.. Time-of-flight MR angiography at 3T versus digital subtraction angiography in the imaging follow-up of 51 intracranial aneurysms treated with coils.. European Journal of Radiology, Elsevier, 2009, 72 (3), pp.365-9. ⟨10.1016/j.ejrad.2008.08.005⟩. ⟨inserm-00845970⟩

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